Doorbell or stick up cam or plug in cam - help me decide :)

Hi all. I've got one ring doorbell and I love it, but I'm trying to determine my best option for the back door. I would love to get the stickup cam - though i'm not sure what makes it better or worse than the door bell - anything? Is the pan/zoom worth it? I would have to use a plug in. I could plug it in at the back door, there is an outlet there. Or I could mount it off the second floor of my house and run a power cord out a window. Does the placement height make a big difference with motion sensing? My door bell already doesn't catch someone pulling into the driveway-even though it should. I thought the camera might be a better way to get it facing right where I want it. I'm a little iffy on plugging a security camera in where some intruder could just unplug it - even though they would be on camera doing it! Any recommendations? I hope I haven't missed the Memorial Day sale! thanks!